STARCUT 500/730 - Spearhead Machinery Ltd

Spearhead Star-Cut 500 & 730Regularly• Check there is no wrapping of string, plastic, grass or other debrisbetween rotor boss and gearbox oil seal.• Inspect gearbox seals for leaks.• Clear grass and other debris from the deck.• Regularly check the rotor boss retaining castle nut for tightness. Firstremove the split pin, select the correct size socket in 3/4” drive and fullytighten the nut. When replacing the split pin, do not slacken the nut toalign the hole, always tighten. Failure to regularly check this nut willresult in serious wear to hub, which is expensive to repair.• It is most important that all gearbox bolts are regularly checked tobe very tight. When the machine is new there will be a ‘beddingin’ period where very frequent checking is important.BladesCaution! When carrying out maintenance work on or near the blades becareful of free-swinging blades over-centering and falling. It isrecommended that protective clothing including hard-hat and gogglesare worn.The blades can be re-sharpened by grinding the cutting edges, care must betaken that the blades are of the same weight and length after grinding. Do notoverheat when grinding as this will affect the hardness of the blades. All theblades are free swinging and swivel on hardened steel bushes, which arereplaceable. When replacing blades, it is important that blades are replacedin sets, in order to retain balance of the rotor. Bushes must be replaced whennew blades are to be fitted.If the blades are showing any signs of severe wear, damage or cracking, theymust be replaced immediately. Never attempt to weld the blades, as this willmake them very brittle thus extremely dangerous. Do not take risks with thecutting blades - if in doubt, replace.20